The intrinsic impedence of free space is

• A. \({\left( {\frac{{{\mu _0}}}{{{\varepsilon _0}}}} \right)^{\frac{1}{2}}}\)
• B. \(\frac{{{\mu _0}}}{{{\varepsilon _0}}}\)
• C. μ0ε0
• D. (μ0ε0)1/2